Unit 1992: Earthquake Engineering

1. Introduction to Earthquake Engineering

• Definition and scope of earthquake engineering
• Importance of studying earthquakes
• Historical significant earthquakes and their impact
• Basic principles and objectives of earthquake engineering

2. Seismology and Plate Tectonics

• Fundamentals of seismology
• Types of seismic waves: P-waves, S-waves, surface waves
• Fault lines and earthquake genesis
• Plate tectonics theory and plate boundaries
• Earthquake focal mechanisms and epicenter determination

3. Earthquake Hazards and Risk Assessment

• Types of earthquake hazards: ground shaking, surface rupture, landslides, tsunamis
• Seismic hazard analysis methods
• Risk assessment and vulnerability of structures and communities
• Socio-economic impacts of earthquakes

4. Seismic Design Codes and Regulations

• Purpose and importance of seismic codes
• Overview of international and regional seismic design standards (e.g., Eurocode 8, ASCE 7, IS 1893)
• Load combinations and design earthquake parameters
• Structural safety and serviceability criteria

5. Structural Dynamics and Response to Earthquakes

• Basic concepts of structural dynamics
• Natural frequencies and mode shapes
• Vibration analysis methods
• Response of single and multi-degree-of-freedom systems to seismic excitation
• Damping and energy dissipation mechanisms

6. Retrofitting and Seismic Upgrading

• Need for retrofitting existing structures
• Retrofitting techniques: base isolation, energy dissipation devices, strengthening methods
• Assessment and evaluation of existing building performance
• Case examples of seismic retrofitting projects

7. Soil-Structure Interaction in Earthquake Engineering

• Soil properties affecting seismic response
• Site effects and ground amplification
• Soil liquefaction phenomenon and mitigation
• Modeling soil-structure interaction

8. Performance-Based Earthquake Engineering

• Concept and objectives of performance-based design
• Performance levels and acceptance criteria
• Structural reliability and risk-based design approaches
• Application in design and evaluation processes

9. Earthquake Early Warning Systems

• Overview of earthquake early warning principles
• Seismic networks and sensor technologies
• Data processing and alert dissemination
• Limitations and benefits of early warning systems

10. Case Studies in Earthquake Engineering

• Analysis of notable earthquake events (e.g., 1994 Northridge, 2011 Tohoku)
• Impact on structures and infrastructure
• Lessons learned and improvements in engineering practice
• Best practices for future earthquake resilience